How to Create a Task to Run a Program in Windows Task Scheduler
How to Keep Your Computer Dust-Free
How to Confirm a Task Ran in Windows Task Scheduler

Troubleshoot CMOS Errors on PC Start Up

To troubleshoot your PC when it is experiencing persistent start-up errors, take a look at the words that scroll across the screen on start up to see if the errors say anything about CMOS. If so, it may be a dead motherboard battery.

Yes, your computer has an internal battery. That battery keeps track of the time while the computer is turned off. On ancient computers, it also maintained something called the CMOS (say “see moss”). So a telltale sign of a CMOS error, and therefore a dead PC battery, was that the word CMOS appeared in the error message. For example:

98304K
162-System Options Not Set
163-Time & Date Not Set
The following configuration options were automatically updated:
Disk 1: 2428 Mbytes
If you are running Unix, you need to configure your system using the COMPAQ User Diagnostics diskette.
Total memory installed: 98304 Kbytes
Diskette Drives
CMOS checksum invalid, default values loaded
F1: Save Changes Compaq Deskpro 4000

To the trained eye, the information in this start-up text error message says a lot. Don’t concern yourself with those details; just note the line that says CMOS checksum invalid. That’s the clue that the PC needs a new battery.

blog comments powered by Disqus
Troubleshoot a Slow PC in Windows 7
How to Clean Inkjet Printer Cartridges
How to Free Space on Your Hard Drive
Create a Task to Display a Pop-Up Message in Windows Task Scheduler
The PC Troubleshooting Process, Step by Step
Advertisement

Inside Dummies.com